The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A mechanized clock where a man fights off a dragon, crab, and rooster.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

France's national museum of scientific and industrial instruments.

A museum of magic with a Sadist past.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This museum houses an imposing skeleton army comprised of creatures great and small.

This modest marker near Notre Dame identifies the very center of Paris.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This massive library holds what was once the largest book collection in the world.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

In the northernmost city in the world, it's illegal to be buried because it’s too cold for bodies to decompose.

This influential Renaissance-era library was once the haunt of kings and monks.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.